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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef MOJO_PUBLIC_PYTHON_SRC_COMMON_H_ | |
| 6 #define MOJO_PUBLIC_PYTHON_SRC_COMMON_H_ | |
| 7 | |
| 8 #include <Python.h> | |
| 9 | |
| 10 #include <map> | |
| 11 | |
| 12 #include "mojo/public/c/environment/async_waiter.h" | |
| 13 #include "mojo/public/cpp/bindings/callback.h" | |
| 14 #include "mojo/public/cpp/bindings/lib/shared_ptr.h" | |
| 15 #include "mojo/public/cpp/system/core.h" | |
| 16 | |
| 17 namespace mojo { | |
| 18 namespace python { | |
| 19 | |
| 20 class ScopedGIL { | |
| 21 public: | |
| 22 ScopedGIL(); | |
| 23 | |
| 24 ~ScopedGIL(); | |
| 25 | |
| 26 private: | |
| 27 PyGILState_STATE state_; | |
| 28 | |
| 29 MOJO_DISALLOW_COPY_AND_ASSIGN(ScopedGIL); | |
| 30 }; | |
| 31 | |
| 32 enum ScopedPyRefAcquire { | |
| 33 kAcquire, | |
| 34 }; | |
| 35 | |
| 36 class ScopedPyRef { | |
| 37 public: | |
| 38 explicit ScopedPyRef(PyObject* object); | |
| 39 ScopedPyRef(PyObject* object, ScopedPyRefAcquire); | |
| 40 | |
| 41 ~ScopedPyRef(); | |
| 42 | |
| 43 operator PyObject*() const; | |
| 44 | |
| 45 private: | |
| 46 PyObject* object_; | |
| 47 | |
| 48 MOJO_DISALLOW_COPY_AND_ASSIGN(ScopedPyRef); | |
| 49 }; | |
| 50 | |
| 51 | |
| 52 class PythonClosure : public mojo::Closure::Runnable { | |
| 53 public: | |
| 54 PythonClosure(PyObject* callable, const mojo::Closure& quit); | |
| 55 ~PythonClosure(); | |
| 56 | |
| 57 void Run() const override; | |
| 58 | |
| 59 private: | |
| 60 ScopedPyRef callable_; | |
| 61 const mojo::Closure quit_; | |
| 62 | |
| 63 MOJO_DISALLOW_COPY_AND_ASSIGN(PythonClosure); | |
| 64 }; | |
| 65 | |
| 66 // Create a mojo::Closure from a callable python object. | |
| 67 Closure::Runnable* NewRunnableFromCallable(PyObject* callable, | |
| 68 const Closure& quit_closure); | |
| 69 | |
| 70 // AsyncWaiter for python, used to execute a python closure after waiting. If an | |
| 71 // error occurs while executing the closure, the current message loop will be | |
| 72 // exited. See |AsyncWaiter| in mojo/public/c/environment/async_waiter.h for | |
| 73 // more details. | |
| 74 class PythonAsyncWaiter { | |
| 75 public: | |
| 76 explicit PythonAsyncWaiter(const mojo::Closure& quit_closure); | |
| 77 ~PythonAsyncWaiter(); | |
| 78 MojoAsyncWaitID AsyncWait(MojoHandle handle, | |
| 79 MojoHandleSignals signals, | |
| 80 MojoDeadline deadline, | |
| 81 PyObject* callable); | |
| 82 | |
| 83 void CancelWait(MojoAsyncWaitID wait_id); | |
| 84 | |
| 85 private: | |
| 86 class AsyncWaiterRunnable; | |
| 87 | |
| 88 typedef std::map<MojoAsyncWaitID, | |
| 89 internal::SharedPtr<mojo::Callback<void(MojoResult)> > > | |
| 90 CallbackMap; | |
| 91 | |
| 92 CallbackMap callbacks_; | |
| 93 const MojoAsyncWaiter* async_waiter_; | |
| 94 const mojo::Closure quit_; | |
| 95 | |
| 96 MOJO_DISALLOW_COPY_AND_ASSIGN(PythonAsyncWaiter); | |
| 97 }; | |
| 98 | |
| 99 } // namespace python | |
| 100 } // namespace mojo | |
| 101 | |
| 102 #endif // MOJO_PUBLIC_PYTHON_SRC_COMMON_H_ | |
| 103 | |
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